Portable air charge-discharge machine



FIG. 1 is a perspective view of portable air charge-discharge machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view thereof when in use; and,

FIG. 9 is an exploded perspective view thereof when in use.

The broken-line showing of environmental structure in FIGS. 8 and 9 is for illustrative pursposes only and forms no part of the claimed design. 

The ornamental design for a portable air charge-discharge machine, as shown and described. 